Conveyer pipe



Dec. 9, 1924. 1,518,705

Q P. H. RApN GONVEYER PIPE Filed Jan. 10, 1923 Patented Dec. 9, 1924.

umren STATES PATENT OFFICE.

PETER H. RAUN, OF FREDERICK, MARYLAND, ASSIGNOR TO THE- FREDERICK EN-GINEERING COMPANY, OF FREDERICK, MARYLAND, A CORPORATION OF MARY- LAND.

CONVEYER PIPE.

To all whom it may concern Be it known that I, PETER H. R-AUN, a citizenof the United States, residing at Frederick, in the county of Frederickand State of Maryland, have invented certain new and useful Improvementsin Conveyer Pipes; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to conductors or pipe such as may be used in theconveying of pieces of materials by a current of fluid.

Among the objects of my invention are z- To provide a pipe and elbowtherefor, provided on the interior with corrugations wherever saidinterior is subject to the pressure of said pieces of material, whethersaid pressure is due to gravity or centrifugal force.

In carrying out my invention I construct the pipe and elbow as shown inthe accompanying drawings in which Figure 1 is an elevation of a portionoi. pipe having one elbow formed integral therewith and another elbowsecured thereto.

Figure 2 is the section along the line 2-2 in Figure 1 looking in thedirection of the arrows.

Figure 3 is the section along the line 3-3 in Figure 1 looking in thedirection of the arrows.

Figure 4 is a section along the line 44 in Figure 1 looking in thedirection of the arrows, and Fig. 5 shows a section similar to thatshown in Fig. 2, but having corrugations completely around the interiorthereof.

In the drawings: 5 represents a section of straight pipe provided withan elbow 6 formed integrally therewith. The straight section 5 isprovided on the interior thereof with corrugations 7, said corrugationsbeing located at the bottom of the interior of said pipe in order toprovide a wearing surface for the pieces of material to ride upon. InFigure 4 the corrugations are shown upon the bottom 7 and upon the innerside of the outer curve of the elbow 6. In these locations the corruga-Serial No. 611,767.

tions are subject not only to the pressure of said pieces due togravity, but also to pressure of said pieces due to centrifugal force.

The elbow shown at the left of Figure 1 is formed of two sections, 9 and10, bolted together and secured to the straight section of the pipe inany approved manner. Liners such as 11 and 12 are mounted within thesections 9 and 10.

These liners are provided with corrugations upon the interior thereofwhich serve the purposes before stated.

h [y improved pipe may be "formed in a number of ways. For instance, thecorrugations for the straight pipe and elbow may be continuous aroundthe interior thereof as shownin Fig. 5, instead of only upon the bottomand sides as is shown in Figure 4. But however formed it is desirable tochill the corrugations upon the interior thereof and the corrugationsupon the interior of the liners 11 and 12. By the use of thesecorrugations I provide a smaller wearing surface for the material toride upon and by chilling them I greatly increase their life. Also byreason of the corrugations, the fluid, either air, steam or water, isenabled to pass through the corrugations and by its buoyancy, orexpansive force, prevent undue pressure of the material upon thecorrugation.

WVhile I have shown one form of carrying out my invention, yet it is tobe understood that various changes may be made therein without departingfrom the spirit thereof.

I claim A conductor for an agglomerate of pieces of material and astream of fluid adapted to extend in a substantially horizontal plane,comprising a pipe having a plurality of corrugations cast integral withthe interior walls of said pipe, said corrugations being positionedwithin an angle less than 180 degrees in the upper and lower portions ofsaid pipe, one group of said corrugations being separated from the othergroup of said corrugations by substantially plane interior walls of saidpipe, said corrugations extending parallel one to the other in thedirection of the length of said pipe I and each of said corrugationsbeing spaced from an adjacent corrugation for a distance proportioned tothe size of the pieces of material to conveyed, wl ier eby fiuidpressure may be passed in thez ldwierportionsof said corrugations forbuo-ying up material sure of the material upon the interior Walls 10 iai uli -i 1 Y PETER HQ RAUN.

